US3231546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid styrene-sulfur compounds and vulcanizates made therewith
Assignee: ATK Launch Systems LLC
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Filing: 1961-10-06
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Granted: 1966-01-25
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Expires: 1981-10-06
Abstract
No abstract record available.
Inventors
- 👤 Eugene R Bertozzi
- 👤 Jack M Solomon
- 👤 Schreiber Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:27
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; C08G; C08G75/00; C08L; C08L21/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
A FRIABLE SOLID POLYMER OF STYRENE AND SULFUR HAVING A SULFUR RANK OF 10 TO 25.
Claim 2
Dependent Claim
16 words
A FRIABLE SOLID POLYMER OF STYRENE AND SULFUR HAVING A SULFUR RANK OF 10 TO 25.
Claim 3
Independent Claim
44 words
A METHOD OF MAKING A FRIABLE SOLID POLYMER OF STYRENE WHICH COMPRISES HEATING A MIXTURE OF STYRENE AND SULFUR WHEREIN THE MOLAR RATIO OF SULFUR TO STYRENE IS FROM 10 TO 25 AT A TEMPERATURE OF 110* TO 135*C. TO FORM SAID SOLID POLYMER.
Claim 4
Independent Claim
44 words
A METHOD OF MAKING A FRIABLE SOLID POLYMER OF STYRENE WHICH COMPRISES HEATING A MIXTURE OF STYRENE AND SULFUR WHEREIN THE MOLAR RATIO OF SULFUR TO STYRENE IS FROM 10 TO 25 AT A TEMPERATURE OF 110* TO 135*C. TO FORM SAID SOLID POLYMER.
References Cited (Backward Citations)
US2989513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |